Friday, January 10, 2014

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JANUARY 10, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

A COATING OF NEW SNOW FELL THIS MORNING, FOLLOWED BY FOG
AND RISING TEMPERATURES. MILD AND MOIST CONDITIONS ARE EXPECTED
THIS WEEKEND FOLLOWING TWO COLDER-THAN-AVERAGE DAYS IN A ROW.

Snow fell from before sunrise until mid morning, accumulating
0.3 inches, adding a new coat of white on the ground. After an
overnight low of 17 degrees temperatures have been steadily
climbing, likely getting set to top out above freezing for the
first time in more than 72 hours.

Today’s Observations:

7 A.M.
Weather: Light snow, overcast nimbostratus
Temperature: 23F; Dew Point: 12F; Wind: S at 10 kts
Sea-level pressure: 30.52 ins. Hg, steady then falling
Visibility: 1 1/2 miles
6-hr. min temp: 17F
Snow depth on ground: Trace
BHO SA 1155 E30 OVC 11/2S- 334/23/12/1710/052/ NEW SNW PST 6 HRS TRACE
8/02/ 58017 6000/ 10024 20017

10 A.M.
Weather: Sky obscured in fog
Temperature: 25F; Dew Point: 23F; Wind: S at 10 kts
Sea-level pressure: 30.50 ins. Hg, falling steadily
Visibility: 1 mile
BHO SA 1455 W2 X 1F 328/25/23/1910/050/ 8//// 57006 600//

1 P.M.
Weather: Sky obscured, light freezing rain, fog
Temperature: 32F; Dew Point: 31F; Wind: SSW at 8 kts,
Sea-level pressure: 30.42 ins. Hg, steady then falling
Visibility: 1 mile
6-hr max. temp: 32F
BHO SA 1755 W2 X 1ZR-F 303/32/31/2008/042/ 8//// SEZRBUKN LGT GLZ
NEW SNW PST 6 HRS 0.3 IN/ 58025 ASOS 60003 MANUAL 60003 10032 20021

WEATHER SUMMARY FOR THURSDAY, JANUARY 9, 2014

TEMPERATURE (DEGREES F)
MAX…..28    NORMAL…..34
MIN…..13    NORMAL…..17
MEAN….21    NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL……………………-5
TOTAL DEPARTURE FOR THE MONTH…………………..-64 [-7.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..44  DEPARTURE……….+5
TOTAL HEATING UNITS FOR THE MONTH………….419  DEPARTURE………+70
TOTAL HEATING UNITS FOR THE SEASON………..2696  DEPARTURE………+42
TOTAL HEATING UNITS LAST SEASON TO DATE……2375  DIFFERENCE…….+347

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23 WNW  AT  11:07 A.M.
AERO…………………..24 WNW  AT  11:05 A.M.
ASOS…………………..26 NW   AT  11:07 A.M.
DAVIS………………….24 NW   AT  11:07 A.M. RMY 27
FASTEST MILE FOR YESTERDAY………………..19 WNW  AT  11:06 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..20 NW   AT  11:08 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 NW  AT   11:08 A.M.
AVERAGE WIND SPEED AND DIRECTION………….8.9 W
ASOS………………….9.4
DAVIS…………………8.1 W [266 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…Trace  DEPARTURE………….-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.72  DEPARTURE………….+0.44
ASOS…………..2.02
TOTAL PRECIPITATION FOR THE YEAR………..1.72  DEPARTURE………….+0.44
ASOS…………..2.02

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……Trace    DEPARTURE…………..-0.6
TOTAL SNOWFALL FOR THE MONTH………….15.6    DEPARTURE………….+11.0
TOTAL SNOWFALL FOR THE SEASON…………31.3    DEPARTURE………….+10.7

PRELIMINARY CLIMATE SUMMARY FOR JANUARY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

1/1   26/16/21/-6/0.00/0.0/505/92          25 W   AERO 25 MPH W   RMY 27
1/2   24/00/12/-15/…./../000/00          39 NNE AERO 39 MPH NNE RMY 39
1/3   12/-3/05/-21/…/../270/49           36 N   AERO 39 MPH N   RMY 34
1/4   25/-4/11/-15/…./../545/99          35 SSW AERO 37 MPH SSW RMY 38
1/5   42/23/33/+07/…./../259 47          30 SE  AERO 32 MPH SE  RMY 42
1/6   57/25/41/+15/…./../006/01          41 S   AERO 46 MPH S   RMY 48
1/7   25/06/16/-10/0.00/0.0/555/100        44 WNW AERO 46 MPH WNW RMY 42
1/8   21/3/12/-14/0.00/0.0/550/99          28 WSW AERO 29 MPH WSW RMY N/A
1/9   28/13/21/-5/0.00/0.0/…/..          23 WNW AERO 24 MPH WNW RMY 27

1/10  morning low temp: 17F; the normal low is now 17F

DAILY RECORDS SET SO FAR THIS MONTH
None so far

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JANUARY 10
HIGH 54F IN 2000
LOW -7F IN 2004
PRECIP 2.16 INS. IN 1935
SNOWFALL 6.3 INS. IN 1977
PEAK GUST 73e SE IN 1977

RECORDS FOR JANUARY 11
HIGH 59F IN 1975
LOW -7F IN 1968
PRECIP 1.58 INS. IN 2008
SNOW 10.2 INS. 1927
PEAK GUST 95e MPH S IN 1980

TODAY’S REPORT PREPARED BY: Brian Fitzgerald